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Storage
TU56
Maintenance manual
Digital Equipment TU56 Maintenance Manual
Dectape transport
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introduction
Specifications
Options
Controls and Indicators
Major Assemblies and Systems
Tape Motion System
Power Supply
Unpacking and Inspection
Mechanical Installation
Mounting Support Plate Bracket and Spacer Block Installation
Spacer Support Bracket Installation
Transport Installation
On-Line Operating Procedures
Operation
Tape Loading and Unloading
Chapter 3 Theory of Operation
Interface
Input Interface Lines - Command Cable - A06/ A07
Select
Con Stop
Con Rev Rem
Con Fwd Rem
Con All Halt
Con Pwr up Dly
Write Echo
Bi-Directional Interface Lines - Information Cable - AB
Timing Track (TT)
Mark Track (MT)
Data Tracks (DO-D2)
Functional Information
Read/Write Head
Dectape Format
Local (Off-Line) Operation
Forward Tape Motion
Hold Tape Motion
Reverse Tape Motion
Remote (On-Line) Operation
Tape Transport Addressing
Error Checks
Select Echo
Write Echo
Tape Motion Control
Write Operation
Read Operation
Module Description
G847 Dual Motor Voltage Control
G848 Motor Control Module
G859 Clock Regulator Module
G888 Manchester Reader/Writer Module
Chapter 4 Maintenance
Recommended Tools and Test Equipment
Preventive Maintenance
Weekly PM Procedure
Monthly PM Procedure
Tape Care and Cleaning
Corrective Maintenance
Control Panel Lamp Replacement
Reel Motor
Motor Removal
Motor Replacement
Reel Hub Clearance Adjustment
Reel Motor Electronic Brake Adjustment
40-Hz Oscillator Adjustment
Read/Write Head
Head Removal
Head Replacement
Head Output Check
Head Skew Check and Adjustment
Write Enable Circuit Check
Troubleshooting
Initial Checks
Signal Source and Tennination Tests
Recommended Spare Parts
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